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  <title>学生</title>
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  <link rel="stylesheet" href="./css/student.css" />
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    // 门口保安 看有没有绿码
    // 代码是从上往下执行
    // 尝试获取有没有本地存储token
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    console.log(token);
    if (token === null) {
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<body class="application application-offset">
  <div class="container-fluid container-application">
    <div class="sidenav show" id="sidenav-main">
      <!-- Sidenav header -->
      <div class="sidenav-header d-flex align-items-center">
        <a class="navbar-brand" href="./index.html">
          <span class="logo">·ITCAST·</span>
        </a>
      </div>
      <!-- User mini profile -->
      <div class="sidenav-user d-flex flex-column align-items-center justify-content-between text-center">
        <!-- Avatar -->
        <div>
          <a href="#" class="avatar rounded-circle avatar-xl">
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              class="" />
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          <div class="mt-5">
            <h5 class="mb-0 text-white">黑马前端</h5>
            <span class="d-block text-sm text-white opacity-8 mb-3">数据可视化</span>
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              <span class="btn-inner--text">学前端来黑马</span>
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        <a href="./student.html" class="btn btn-square text-sm active">
          <span class="btn-inner--icon d-block"><i class="bi bi-people bi-2x"></i></span>
          <span class="btn-inner--icon d-block pt-2">学生</span>
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      <!-- Misc area -->
      <div class="card bg-gradient-warning">
        <div class="card-body">
          <h5 class="text-white">哈喽, 朋友!</h5>
          <p class="text-white mb-4">为什么不现在开始学习前端，创造一些令人惊叹的东西呢？</p>
          <a href="http://itcast.cn" class="btn btn-sm btn-block btn-white rounded-pill" target="_blank">Get started</a>
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      <nav class="navbar navbar-main navbar-expand-lg navbar-dark navbar-border" id="navbar-main">
        <div class="container-fluid">
          <!-- Navbar nav -->
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              <!-- Home  -->
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                <a class="nav-link pl-lg-0" href="./index.html"> 首页 </a>
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              <li class="nav-item">
                <a class="nav-link pl-lg-0" href="./index.html"> 传智教育 </a>
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              <li class="nav-item">
                <a class="nav-link pl-lg-0" href="./index.html"> 黑马程序员 </a>
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                <a class="nav-link pl-lg-0" href="./index.html"> 文档 </a>
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            <!-- Right menu -->
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                <a class="nav-link pr-lg-0" href=".dropdown-menu" role="button" data-toggle="dropdown"
                  aria-haspopup="true" aria-expanded="false">
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                    <div class="ml-2 d-none d-lg-block">
                      <span class="mb-0 text-sm font-weight-bold">Admin</span>
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                </a>
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                <a class="nav-link pl-lg-0" id="logout" href="javascript:;"> 退出 </a>
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      <div class="page-content">
        <div class="page-title mb-3">
          <div class="row justify-content-between align-items-center">
            <div class="col-md-6 mb-3 mb-md-0">
              <h5 class="h3 font-weight-400 mb-0 text-white">Students</h5>
              <span class="text-sm text-white opacity-8">一共有 <b class="total">0</b> 位学员</span>
            </div>
            <div class="col-md-6 d-flex align-items-center justify-content-between justify-content-md-end">
              <a id="openModal" href="javascript:;" class="btn btn-sm btn-white btn-icon-only rounded-circle ml-4">
                <span class="btn-inner--icon"><i class="bi bi-plus bi-2x"></i></span>
              </a>
            </div>
          </div>
        </div>
        <div class="row">
          <div class="col">
            <div class="card card-fluid">
              <div class="table-responsive" style="min-height: 1000px">
                <table class="table align-items-center">
                  <thead>
                    <tr>
                      <th>姓名</th>
                      <th>年龄</th>
                      <th>性别</th>
                      <th>组号</th>
                      <th>期望薪资</th>
                      <th>就业薪资</th>
                      <th>籍贯</th>
                      <th>操作</th>
                    </tr>
                  </thead>
                  <tbody class="list">
                    <!-- <tr>
                      <td>张杰</td>
                      <td>20</td>
                      <td>男</td>
                      <td>第2组</td>
                      <td>10000</td>
                      <td>13000</td>
                      <td>北京北京市东城区</td>
                      <td>
                        <a href="javascript:;" class="text-success mr-3"><i class="bi bi-pen"></i></a>
                        <a href="javascript:;" class="text-danger"><i class="bi bi-trash"></i></a>
                      </td>
                    </tr> -->
                  </tbody>
                </table>
              </div>
            </div>
          </div>
        </div>
        <!-- footer -->
        <div class="footer pt-5 pb-4 footer-light" id="footer-main">
          <div class="row text-center text-sm-left align-items-sm-center">
            <div class="col-sm-6">
              <p class="text-sm mb-0">© 2022 <a href="https://itcast.cn" class="h6 text-sm" target="_blank">前端学科</a>.
                All rights reserved.</p>
            </div>
            <div class="col-sm-6 mb-md-0">
              <ul class="nav justify-content-center justify-content-md-end">
                <li class="nav-item">
                  <a class="nav-link" href="#">Support</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link" href="#">Terms</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link pr-0" href="#">Privacy</a>
                </li>
              </ul>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
  <!-- add Modal -->
  <div class="modal fade" id="modal">
    <div class="modal-dialog modal-lg">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title">添加学员</h5>
          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
        </div>
        <div class="modal-body">
          <form id="form" class="g-3 row" autocomplete="off" novalidate>
            <input type="hidden" name="id">
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">姓名：</label>
                <input type="text" name="name" class="form-control" placeholder="请输入姓名" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">性别：</label>
                <div class="input">
                  <div class="form-check d-inline-block">
                    <input value="0" checked id="cb01" class="form-check-input" type="radio" name="gender" />
                    <label for="cb01" class="form-check-label">男</label>
                  </div>
                  <div class="form-check d-inline-block">
                    <input value="1" id="cb02" class="form-check-input" type="radio" name="gender" />
                    <label for="cb02" class="form-check-label">女</label>
                  </div>
                </div>
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">年龄：</label>
                <input type="number" required min="10" max="90" name="age" class="form-control" placeholder="请输入年龄" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">组号：</label>
                <input type="text" name="group" class="form-control" placeholder="请输入1-8组号" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">期望薪资：</label>
                <input type="text" name="hope_salary" class="form-control" placeholder="请输入期望薪资" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">就业薪资：</label>
                <input type="text" name="salary" class="form-control" placeholder="请输入就业薪资" />
              </div>
            </div>
            <div class="col-sm-12">
              <div class="form-group">
                <label class="input-group-label">籍贯：</label>
                <div class="input pl-0">
                  <select class="form-select custom-select" name="province">
                    <option value="">--省份--</option>
                  </select>
                  <select class="form-select custom-select" name="city">
                    <option value="">--城市--</option>
                  </select>
                  <select class="form-select custom-select" name="area">
                    <option value="">--地区--</option>
                  </select>
                </div>
              </div>
            </div>
          </form>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
          <button type="button" class="btn btn-blue" id="submit">确认</button>
        </div>
      </div>
    </div>
  </div>
  <script src="./bootstrap/bootstrap.min.js"></script>
  <script src="./lib/axios.js"></script>
  <script src="./lib/form-serialize.js"></script>
  <script src="./js/common.js"></script>
  <script>
    window.onload = function () {
      // 删除成功要再拿一次 编辑成功再拿一次 所以最好的写法把代码封装在一个函数里面
      async function getStudentList() {
        const res = await axios({ url: '/students' })
        console.log(res);
        const str = res.data.map(item => `
        <tr>
          <td>${item.name}</td>
          <td>${item.age}</td>
          <td>${item.gender === 0 ? '男' : '女'}</td>
          <td>第${item.group}组</td>
          <td>${item.hope_salary}</td>
          <td>${item.salary}</td>
          <td>${item.province}${item.city}${item.area}</td>
          <td data-id="${item.id}">
            <a href="javascript:;" class="text-success mr-3"><i class="bi bi-pen"></i></a>
            <a href="javascript:;" class="text-danger"><i class="bi bi-trash"></i></a>
          </td>
        </tr>
        `).join('')
        document.querySelector('tbody').innerHTML = str
      }

      getStudentList()

      let myModal = new bootstrap.Modal(document.getElementById('modal'))

      // 删除功能 和 编辑 事件委托
      document.querySelector('tbody').onclick = async function (e) {
        if (e.target.classList.contains('bi-trash')) {
          console.log('删除');
          //parentNode 儿子找父亲
          const id = e.target.parentNode.parentNode.dataset.id
          console.log(id);
          await axios({ method: 'DELETE', url: `/students/${id}` })
          alert('删除成功')
          getStudentList()
        } else if (e.target.classList.contains('bi-pen')) {
          console.log('编辑');
          document.querySelector('.modal-title').innerHTML = '编辑'
          const id = e.target.parentNode.parentNode.dataset.id
          const res = await axios({ url: `/students/${id}` })
          console.log(res);
          renderSSQ()
          // 复选框 单选 select checked 
          //写九行
          //女不能改成男
          for (let key in res.data) {
            if (key === 'gender') {
              //交集选择器 
              // [name = "gender"]
              console.log(`[name="${key}"][value='${res.data[key]}']`);
              document.querySelector(`[name="${key}"][value='${res.data[key]}']`).checked = true
            } else if (document.querySelector(`[name="${key}"]`)) {
              document.querySelector(`[name="${key}"]`).value = res.data[key]
            }
            // if (document.querySelector(`[name="${key}"]`)) {
            //   document.querySelector(`[name="${key}"]`).value = res.data[key]
            // }

          }
          myModal.show()//把这一行放最后面
        }
      }

      //添加功能第一步 - 模态框显示和省市区联动

      document.querySelector('#openModal').onclick = function () {
        document.querySelector('.modal-title').innerHTML = '新增学员'
        document.querySelector('form').reset()
        myModal.show()
        renderSSQ()
      }

      // get 获取 
      // post 新增
      // delete 删除
      // put 修改
      // 添加的第二步 新增保存
      document.querySelector('#submit').onclick = async function () {
        const data = serialize(document.querySelector('form'), { hash: true })
        console.log(data);
        const reg = /\d+/
        if (!reg.test(data.age)) return alert('年龄是非法的,必须是数字')
        // 把数字类型进行转换
        data.age = +data.age
        data.gender = +data.gender
        data.salary = +data.salary
        data.hope_salary = +data.hope_salary
        data.group = +data.group
        if (document.querySelector('[name="id"]').value) {
          console.log('在做编辑第二步 ');
          const res = await axios({ method: 'PUT', url: `/students/${data.id}`, data })
          console.log(res);
          myModal.hide()//隐藏模态模态框
          getStudentList()//获取最新的列表数据
          document.querySelector('form').reset()
        } else {

          try {
            const res = await axios({ method: 'POST', url: '/students', data })
            console.log(res);
            myModal.hide()//隐藏模态模态框
            getStudentList()//获取最新的列表数据
            document.querySelector('form').reset()
          } catch (err) {
            alert('数据格式有问题,请重来')
          }
        }
      }




      //渲染省市区联动
      function renderSSQ() {
        renderProvince()

        // 省市区联动
        document.querySelector('[name="province"]').onchange = function () {
          renderCity(this.value);
        }

        // 市区的联动
        document.querySelector('[name="city"]').onchange = function () {
          const pname = document.querySelector('[name="province"]').value
          renderArea(pname, this.value);
        }
      }
      //渲染省份数据
      async function renderProvince() {
        const res = await axios({ url: '/api/province' })
        console.log(res);
        document.querySelector('[name="province"]').innerHTML = res.data.map(item => `<option>${item}</option>`).join('')
        const pname = document.querySelector('[name="province"]').value
        renderCity(pname)
      }

      //渲染城市数据
      async function renderCity(pname) {
        const res = await axios({ url: '/api/city', params: { pname } })
        console.log(res);
        document.querySelector('[name="city"]').innerHTML = res.data.map(item => `<option>${item}</option>`).join('')


        const cname = document.querySelector('[name="city"]').value
        renderArea(pname, cname)
      }


      //渲染城市数据
      async function renderArea(pname, cname) {
        const res = await axios({ url: '/api/area', params: { pname, cname } })
        console.log(res);
        document.querySelector('[name="area"]').innerHTML = res.data.map(item => `<option>${item}</option>`).join('')
      }
    }















    // 200 成功 404 资源找不到 500 服务器出错 401 没有权限
    //我们涉及到登录的项目有一个东西很重要叫token
    // 1. 什么时候获取到token  登录的时候 login
    // 2. token存到哪里 本地存储 localStorage 因为我们后面有很多页面要用 所以要持久化
    // 3. 什么时候需要用token 一般一个项目接口只有二个地方不用（注册和登录）
    // 4. 以后大家上班的项目只要发现拿数据拿回来一个401就要明白ajax没有加上headers  看电影带门票
    // 测试代码
    // window.onload = async function () {
    //   const res = await axios({
    //     url: '/students',
    //     // 自定义请求头 我们需要权限的接口需要设置 如果没有 返回 401
    //     // headers: {
    //     //   // a: 'abc',
    //     //   // b: 'bcd'
    //     //   Authorization: localStorage.getItem('token'),
    //     // }
    //   })
    //   console.log(res);
    // }

    // 100个接口都需要headers中添加token 
  </script>
</body>

</html>